作者:Mercedes Medio-Simón、M. José Alvarez de Laviada、José Seqúlveda-Arques
DOI:10.1039/p19900002749
日期:——
1-Phenyl-5-vinylpyrazole reacts with dimethylacetylenedicarboxylate (DMAD), N-phenylmaleimide (NPMI), tetracyanoethylene (TCNE), 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD), and diethyl azodicarboxylate (DEAZD) to afford 1:1 adducts through Diels–Alder cycloadditions. Ene reaction products were not detected in these reactions. Treatment of the dihydroindazole from the reaction with DMAD, gave the corresponding
1-苯基-5-乙烯基吡唑与二甲基乙炔二羧酸酯(DMAD),N-苯基马来酰亚胺(NPMI),四氰基乙烯(TCNE),4-苯基-1,2,4-三唑啉-3,5-二酮(PTAD)和偶氮二羧酸二乙酯反应(DEAZD)通过Diels–Alder环加成反应提供1:1的加合物。在这些反应中未检测到烯反应产物。用DMAD处理反应中的二氢吲唑,得到相应的吲唑。在与丙酸甲酯(MP)的反应中,由双重Diels-Alder反应得到1:2的加合物,然后将乙烯挤出。